Boiler-retarder machine.



M. c HUTCH YI N SON. BOILER RETARDER MACHINE.'

APPLICATION FILED OCT-5.19115.

Patented Apr. 23,1918.

2 SHEETS-SHEET I.

WITNESSES M. C. HUTCHINSON, .BOILER RETARDER MACHINE.

APPLlCATION FILED OCT-5. I916.

Patented Apr. $3, 1918. 2 SHEETS-SHEL WITNESSES INVENTOR tilt MORTGN C. HUTCHINSON, 0F WOODB'URY, NEW JERSEY.

BOILER-RETARDER MACHINE.

1,263.,d9ti.

Application filed October 5, 1916.

To all whom it may concern:

Be it known that I, Monrou C. HuronmsON, a citizen of the United States, residing at Woodbury, in the county of Gloucester, State of New Jersey, have invented a new and useful Boilenltetarder Machme, of which the following is a specification.

My present invention comprehends av novel construction of machine which while specially designed for the production of retarder strips such as are used in boiler tubes, is not limited to such use and may be employed in all cases wherein it is de sired to form a bend at diiferent points in the length of a strip of material.

Another object of my invention is to devise a novel mounting for a plurality of sets of rolls, one set of which is rotatably adjustable with respect to the other set and novel means for locking the parts in their adjusted position.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description of my invention.

For the purpose of illustrating my invention, I have shown in the accompanying drawings a preferred embodiment of it which is typical of the invention and which will give satisfactory and reliable results in practice. It is, however, to be understood that this embodiment is typical only and that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise organization of these instrumentalities as herein. shown and described.

Figure 1 represents a top plan view of a. boiler retarding machine embodying my invention.

Fig. 2 represents a front elevation of the machine.

Fig. 3 represents a sectional view, the section being taken in the plane indicated by the line 33 of Fig. 2.

Fig. 4 represents a sectional view, in the same plane as Fig. 3 after the rotatable por* tion has been given one-quarter of a revolution.

. Similar numerals of reference indicate corresponding parts.

Referring tothe drawings 1 designates the base plate of a boiler re= tarder machine embodying my invention,

said base plate be ng provided with an. aperfipeeification of Letters Patent.

Patented l t .1311. as, rare; Serial no. 123,812.

ture 2 in order that it may be clamped to a'table or other support, /Itisi ng fro n the base plate 1 is a standar d on head 3Rhaving an opening 4 therethrough preferably. ceptrally located, and in this openingardjou j naled the superposed rollers 5, it being un/ derstood that any desired type o f journal may be employed. a

The standard 3 since it is carried by the stationary base plate 1, is stationary andfis .provided with a desired number of curved slots 6, two of such slots being employed in the present instance. The front face of the standard 3 is recessed asat 7, thereby forming the annular bearing 8.

9 designates a rotatable head having the threaded apertures 10 and 11, two sets ofwhich are shown in the present instance. 12 designates bolts or cap screws which pass through the slots 6 and engage the apertures 10 to provide for a right-hand rotation of the head 9, and in'case a left-hand rotation of the head 9 is desired, these cap screws engage the threaded apertures 11 insteadof the apertures 10. The rear face of the head 9 is recessed or chambered as at 13 and is provided with a laterally extending annular flange 14 which engages the bearing 8 when the parts are assembled.

15 designates the wall of an opening through the head 9, the opening communieating with the chamber or recess 13, and in said opening 15 are disposed the second set of superposed rolls 16. The periphery of the rotatable head 9 is provided with a desired number of apertures 17 into which a working tool is adapted to be inserted to effect the desired adjustment of the rota-' table head 9.

The adjoining outer faces of the standard 3 and the rotatable head 9 are calibrated or provided with insignia indicative of the amount of rotation which has'been impart-ed to the rotatable head.

In the drawings 1 have shown one manner of doing this by forming a line or depression 18 on the stationary standard 3 and by forming in proximity to the apertures 17 the lines 19, which may be brought into register with the line 18 on the partial of a hook 23, 24 adapted to engage an aperture in a strip of material 25. 26 designates a swivel block through which the shank of the hook 23 passes, and an antifriction bearing 27 is provided which bears against the swivel block. The shank of the hook is provided with nuts '28 one of which serves as a lock nut.

' and 16, 1:6, as seen in Fig. 3. The hook 23 of the swivel being connected to the strip, the same can be readily advanced either manually or mechanically by any suitable means, and after the strip has been drawn a short distance to the left of the position seen in Fig. 3, the operator inserts a suitable implement in the hole 17 and turns-the head 9 to the desired extent until the rollers 16 are disposed at right angles to the rollers 5 substantially as seen in Fig. 4, whereupon the bolts 12 are tightened. When the head 9 is turned as stated,-the twist shown of the strip 25 at the left of the head 9 in Fig. 4 is formed; the saidtwist being made in the chamber 13 and by-virtue of the rollers 16 being moved from the position shown in Fig. 3 to that shown in Fig. 4. Then as the strip 25 is drawn farther toward the left and its portion at the left of the rollers 16' turns about its axis, the twist-referred to will pass, in upright position, between the rollers 16, and then as the portion e f-the strip 25 at the left of the rollers 16, further turns about its axis, the succeeding portion of the strip will pass between the rollers 16 and will be followed by the twisted portion shown in the chamber 13, Fig. l, and so on until the desired length of ret'arder is produced.

It will be understood that the strips produced by my novel machine are what are commonly termed retarder strips and which are longitudinally disposed in the fines of steam boilers for the purpose of retarding the passage of the hot gases or products of combustion therethrough, so that it will be apparent that while a high degree of-accuracy in the bends or twists of the retarders is not essential, my novel machine will produce the same with a SUbStZIDCiZIl'UHlfOIID spiral or helical contour, so that the same will be sulliciently accurate for the purposes intended. .It will be understood that while I have described my novel mechanism as being adapted particularly for the production of these retarder strips used in steam boiler fiues, the same may be employed for producing twisted or helical'strips for angers or for twisting bars or strips to form binders for cement structures and other purposes, and may be employed for twisting cold metallic resilient and galvanized strips, as fencing strips, or for auger bits for coal or rock drilling machinery, or it may be used for twisting metal to form spiral conveyers or to form twisted or helical strips adapted for any other uses than those above mentioned.

My invention is particularly adapted for use in machine shops .or on shipboard where a light and portable machine of this character is desired, since the machine can be readily transported to any desired point and after being used to thedesired extent can be readily removed and transported to any other place where it is desired to use the same.

It will be apparent that the machine can be readily taken apart when desired and in case of any injury to the rollers 16 or 5, the same can be readily replaced by unskilled labor.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the character described, the combination of a stationary head having an aperture and a wall surrounding the aperture and extending rearwardly from the head and also having a recess in its front face, in communication with said aperture, a head rotatably adjustable on said stationmy head and having an aperture and a wall surrounding said aperture and extending forwardly from the headand also having a recess in its rear face, in communication with the recess of the stationary head, rolls mounted in the rearwardly extending wall (of the stationary head, and rolls mounted [in the forwardly extending wall of the rotatably"adjustable head.

2. In a device of the character described,

the combination of a stationary head having an aperture and a wall surrounding the aperture and extending rearwardly from the head and also having a recess in its front face, in communication with said aperture, and slots that describe parts of a circle, athcad rotatably adjustable on said stationary head and having an aperture and a wall surrounding said aperture and extending forwardly from the head and also having a recess in its rear face, in communication with the recess of the stationary head, and further having threaded sockets in its rear face and in registration with the slots of the stationary head, threaded bolts extending through said slots and into said threaded sockets, rolls mounted in'the rearmesses; 'u

' wardly extending Well of the stationary pairs of rolls therein and also having rehead, and, rolls mounted in the forwardly cesses in their opposed faces in communica- 10 extending wall of the rotatably adjustable tion with each other and said apertures.

head.

5 3. In adevice of the character described, MORTON HUTOHINSON' the combinatiollinf a-stationary head and St Witnesses: head rotatablyepbugtable on the stationary A; J. HENDERwN head; the said lueedis having apertures and J. WIGKEBSHAM. 

